class Thegarage::Gitx::Cli::NukeCommand

Public Instance Methods

nuke(bad_branch) click to toggle source
# File lib/thegarage/gitx/cli/nuke_command.rb, line 11
def nuke(bad_branch)
  good_branch = options[:destination] || ask("What branch do you want to reset #{bad_branch} to? (default: #{bad_branch})")
  good_branch = bad_branch if good_branch.length == 0

  last_known_good_tag = current_build_tag(good_branch)
  return unless yes?("Reset #{bad_branch} to #{last_known_good_tag}? (y/n)", :green)
  assert_aggregate_branch!(bad_branch)
  return if migrations_need_to_be_reverted?(bad_branch, last_known_good_tag)

  say "Resetting "
  say "#{bad_branch} ", :green
  say "branch to "
  say last_known_good_tag, :green

  checkout_branch Thegarage::Gitx::BASE_BRANCH
  run_cmd "git branch -D #{bad_branch}", :allow_failure => true
  run_cmd "git push origin --delete #{bad_branch}", :allow_failure => true
  run_cmd "git checkout -b #{bad_branch} #{last_known_good_tag}"
  run_cmd "git push origin #{bad_branch}"
  run_cmd "git branch --set-upstream-to origin/#{bad_branch}"
  checkout_branch Thegarage::Gitx::BASE_BRANCH
end

Private Instance Methods

build_tags_for_branch(branch) click to toggle source
# File lib/thegarage/gitx/cli/nuke_command.rb, line 56
def build_tags_for_branch(branch)
  run_cmd "git fetch --tags"
  build_tags = run_cmd("git tag -l 'build-#{branch}-*'").split
  build_tags.sort
end
current_build_tag(branch) click to toggle source
# File lib/thegarage/gitx/cli/nuke_command.rb, line 50
def current_build_tag(branch)
  last_build_tag = build_tags_for_branch(branch).last
  raise "No known good tag found for branch: #{branch}.  Verify tag exists via `git tag -l 'build-#{branch}-*'`" unless last_build_tag
  last_build_tag
end
migrations_need_to_be_reverted?(bad_branch, last_known_good_tag) click to toggle source
# File lib/thegarage/gitx/cli/nuke_command.rb, line 36
def migrations_need_to_be_reverted?(bad_branch, last_known_good_tag)
  return false unless File.exist?('db/migrate')
  outdated_migrations = run_cmd("git diff #{last_known_good_tag}...#{bad_branch} --name-only db/migrate").split
  return false if outdated_migrations.empty?

  say "#{bad_branch} contains migrations that may need to be reverted.  Ensure any reversable migrations are reverted on affected databases before nuking.", :red
  say 'Example commands to revert outdated migrations:'
  outdated_migrations.reverse.each do |migration|
    version = File.basename(migration).split('_').first
    say "rake db:migrate:down VERSION=#{version}"
  end
  !yes?("Are you sure you want to nuke #{bad_branch}? (y/n) ", :green)
end